(上海大學(xué) 上海市現(xiàn)代冶金與材料制備重點(diǎn)實(shí)驗(yàn)室，上海 200072)
摘 要: 為強(qiáng)化電遷移技術(shù)的效果， 在金屬液兩端施加恒定電場(chǎng)的同時(shí)施加了一個(gè)與電流方向平行的穩(wěn)衡磁場(chǎng)， 考察了在磁場(chǎng)作用下BiMn合金中MnBi相的電遷移情況。 實(shí)驗(yàn)結(jié)果表明， 在磁場(chǎng)的作用下， MnBi相可以在10 A/cm2的電流密度下向陰極發(fā)生遷移；當(dāng)施加的電流密度一定時(shí)， MnBi相的偏移率隨著磁感應(yīng)強(qiáng)度的增大而增大， 且存在一個(gè)臨界值； 當(dāng)磁感應(yīng)強(qiáng)度一定時(shí)，只有當(dāng)電流密度達(dá)到一定的值時(shí)才能使析出相穩(wěn)定遷移。
關(guān)鍵字: Bi-Mn合金； 磁場(chǎng)； 電場(chǎng)； 相顆粒； 電遷移
DENG Kang, XU Kuang-di
（Shanghai Enhanced Laboratory of Modern Metallurgy and
Material Processing, Shanghai University, Shanghai 20072, China）
Abstract: To improve the effect of electrotransport technique, a parallel magnetic field was applied to the electro-transport system, and the migration of MnBi phase in BiMn alloy was investigated. The results show that under the influence of magnetic field, MnBi phase can migrate toward to the cathode with only 10 A/cm2 current density; the ratio of migrated MnBi phase increases with increasing magnetic flux density, and there is a critical value, under which the ratio of MnBi phase excursion would increase remarkably; fixing the magnetic flux density, the precipitated phase can migrate steadily when current density is above a critical value.
Key words: Bi-Mn alloy; magnetic field; electric field; phase particle; electrotransport
